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(11)

EP 2 734 563 A1

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(43) Date of publication: 28.05.2014 Bulletin 2014/22 (21) Application number: 12738682.9 (22) Date of filing: 10.07.2012

(51) International Patent Classification (IPC):  C08G 18/08(2006.01) B22C 1/22(2006.01) C08G 18/64(2006.01) (86) International application number: PCT/US2012/046077 (87) International publication number: WO 2013/015981 (31.01.2013 Gazette 2013/05)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 22.07.2011 US 201113188919 (71) Applicant: Amcol International Hoffman Estates, IL 60192 (US)	(72) Inventors: DI, Jianbo Palatine, IL 60067 (US) FUQUA, Joseph, M. Fond Du Lac, WI 54935 (US) (74) Representative: UEXKÜLL & STOLBERG  Patentanwälte Beselerstrasse 4 22607 Hamburg 22607 Hamburg (DE)